Great Internet Mersenne Prime Search (GIMPS)

Prime95, also distributed as a command-line utility mprime under FreeBSD and Linux, is a freeware application written by George Woltman. It is used by Great Internet Mersenne Prime Search (GIMPS), a distributed computing project dedicated to Mersenne prime hunting. In overclocking circles, its also commonly used for stability testing.

This repo is a mirror to Free Mersenne Prime Search Software source code for Windows, Linux, FreeBSD, and Mac OS X.

You could download the latest code from GIMPS or release page.

Mirror rank from PrimeNet Top Overall Teams

Top producers for the last year.
This hourly report generated 2026-05-05 13:00 UTC

Rank	Team Name	Total GHz Days	90 day	30 day	7 day	1 day	TF	P-1	LL/PRP	DC	ECM	ECM-F
1	GIMPS.Russia	822523213					0.2		0.1		99.7
2	Slovakia	768062442					0.1	98.9	0.1		0.9
3	POLAND	210596503		⬆ 1			0.5	97.7	0.3	0.1	1.5
4	Ars Technica Team Prime Rib	122759432	⬆ 3	⬆ 2	⬆ 2			99.1		0.8
5	PrimeNet	122333986	⬇ 1	⬇ 2			0.2	98.0	0.7	1.0	0.1
6	-Too many Ones-	106325240	⬇ 1	⬇ 1	⬇ 2		0.1	85.8			14.0
7	unRAID	33303333	⬇ 1					99.7	0.3
8	GIMPSChina	22076593					68.1	20.4	3.9	0.6	7.0
9	One Man Team	13935969		⬆ 1				99.5	0.5
10	GW's legions	13296266	⬆ 1	⬆ 1				0.8	34.8	1.4	62.9
11	Team-Deutschland	13206272	⬆ 2	⬆ 1			2.6	40.3	0.6	0.1	56.3
12	szerverem.hu	13101764	⬆ 3	⬆ 2			3.2	26.5	63.9	2.9	3.5
13	UCM-curtisc	11822242	⬇ 1						99.3	0.7
14	More Power!!!	10949996	⬇ 4	⬇ 5			17.2	70.8	2.5	1.7	7.9
15	TeamUK	7122809	⬇ 1				47.9	3.2	19.1	1.4	28.1	0.1
16	Porta Kruse	6406409					2.0	0.4			91.3	6.1
17	GPU to 72	4788715					51.7	27.2	0.4	3.9	16.6
18	Numberphile	3100813	⬆ 1				21.4	40.2	20.3	5.7	12.2
19	UW Eau Claire	2755640	⬆ 25	⬆ 2	⬆ 1		88.6		8.4	3.1
20	tsc	2651275			⬇ 1		74.2	4.2	1.3	0.4	20.0
21	Argentina	2317654	⬆ 210	⬆ 35	⬆ 3		94.6		5.4
22	SpongeBob SquarePants	2294704	⬇ 4	⬇ 3	⬇ 1			31.2	58.4	10.4
23	UKRAINE	2240480	⬇ 1	⬇ 1	⬇ 1		19.1	10.4	55.9	14.6
24	Wikipedia	2028441	⬇ 1	⬇ 1	⬇ 1		59.8	32.8	4.3	2.1	0.8
25	Dutch Power Cows	1482191	⬇ 4	⬇ 1			31.3	25.5	1.5	1.8	39.9
26	GIMPS.USA	1461102	⬇ 1	⬇ 1			8.7	0.6	4.4	1.3	84.9
27	GIMPS.Japan	1313569	⬇ 1	⬇ 1			6.5		9.4	2.6	81.4
28	Swedes Of Primes	1277361	⬇ 4	⬇ 1			0.5	80.9	15.7	2.8
29	GIMPS.Occitania	1207220	⬇ 2	⬇ 1				4.4				95.6
30	GIMPS.Korea	992818	⬆ 2	⬇ 1			89.1	4.9	4.4	0.9	0.4
31	MBAi.Cloud	820004	⬇ 1	⬇ 1					99.9	0.1
32	MATHSareREAL	605184	⬇ 3	⬇ 1			96.0		2.7	1.2
33	citizenscience.ru	540364	⬆ 1				87.8	3.5	4.4	1.1	2.9	0.3
34	Buhr	466652	⬆ 1		⬆ 1		55.7	4.1	17.8	5.5	16.8
35	MOXA	451368	⬇ 7	⬇ 3	⬇ 1		99.0		0.7	0.3
36	Terry Kim Team	403371	⬇ 3		⬆ 1		96.4		2.6	0.7
37	Rechenkraft.net	396806	⬇ 6	⬇ 2	⬇ 1		1.4	56.0	4.5	5.8	32.2
38	S485122	307534	⬇ 2	⬇ 1				95.0		5.0
39	Colorado School of Mines	287572	⬆ 17				92.6		5.7	1.6
40	Smoke-it	265746	⬇ 3	⬇ 2			90.5	7.1	1.8
41	404 - "Primes not Found"	228021	⬆ 8	⬆ 6	⬆ 1		86.9		12.8	0.2
42	YahsTeam	225210	⬇ 4	⬇ 1	⬇ 1		88.4		9.8	1.8
43	nranks	220712	⬆ 4	⬆ 1	⬆ 3	⬆ 3	33.8	0.5	2.9	0.3	62.6
44	randomteam	208173	⬇ 3	⬇ 4	⬇ 1	⬇ 1					100.0
45	GIMPS Team Philippines	201862	⬇ 3	⬇ 3	⬇ 1	⬇ 1	61.3		6.9	1.8	26.8
46	NerdyGirls	200868	⬇ 7	⬇ 3	⬇ 1	⬇ 1		42.3	6.9	50.8
47	Canada	186786	⬇ 7	⬇ 2				2.4	68.8	28.6
48	Team Tartan	184695	⬇ 5	⬇ 2					76.8	23.2
49	OverclockerAustralia	152222	⬇ 1	⬇ 1			57.7		20.5	18.3
50	NanJing Tech	147165	⬆ 48	⬆ 10			24.9		70.3	4.8
51	GIMPS.NZ	132717					80.0		10.0	10.0
52	Team China	125265	⬇ 2	⬆ 1					99.7	0.3
53	Unicamp	123240	⬆ 4	⬇ 1			70.3	0.1	24.9	4.7
54	GIMPS.France	111865	⬆ 6	⬆ 1	⬆ 2		10.0	64.0	5.0	8.4	12.4
55	GIMPS China	109074	⬇ 10	⬇ 6	⬇ 1		90.7		4.7		4.3
56	SASAKI	107128	⬇ 3	⬇ 2	⬆ 1		100.0
57	BitMEX Research	105890	⬇ 11	⬇ 7	⬇ 2				95.5	4.5
58	Wisconsin	94894	⬇ 4				44.1		30.5	25.3
59	AMD Users	87381	⬆ 12	⬆ 4	⬆ 1	⬆ 1	53.4	0.7	10.9	34.6	0.4
60	Cap'n Entropy's Cavalcade of Wonderment	87149	⬇ 8	⬇ 1	⬇ 1	⬇ 1	73.9	6.2	17.5	2.4
61	IOTA	87138	⬆ 57	⬆ 9	⬆ 2		95.2		2.9	1.9
62	UIUC	85861	⬆ 1						68.3	31.7
63	EgyptianPolymaths	82978	⬇ 8	⬇ 6	⬇ 2			52.0			40.3
64	Net-Work	77383	⬇ 2		⬆ 1		4.3	1.9			86.8
65	SHADO	76780	⬇ 4	⬇ 4	⬇ 1				61.9	18.0	11.8	2.0
66	Eratosthenes Sieve	74316	⬇ 2	⬇ 1			0.7		95.3	3.9
67	Wile E. Coyote	69753	⬆ 11	⬆ 1	⬆ 1				75.2	0.8	23.9
68	Esperanto	67976	⬇ 3	⬇ 2	⬇ 1			25.9	5.9	68.1	0.2
69	AJ	66530	⬆ 6						75.0	25.0
70	GIMPS.Portugal	61774	⬆ 39	⬆ 35	⬆ 9	⬆ 2	38.8	52.6		8.6
71	ParadoxZ Commando	61267	⬆ 2	⬆ 1	⬆ 1	⬇ 1			73.3	26.7
72	S147127	60388	⬆ 4	⬆ 2	⬇ 1	⬇ 1	29.1		16.2	54.8
73	Team Israel	58217	⬇ 4				96.8		2.7	0.5
74	Team_Italia	56691	⬇ 2	⬇ 3	⬇ 4		3.0		67.2	23.4	2.2	3.5
75	Hungary	52754	⬇ 16	⬇ 8	⬇ 1		0.1		3.1	1.9	94.4
76	ComputerraRU	50501	⬆ 1	⬆ 1			20.4		70.3	9.3
77	GIMPS.NEO	50009	⬇ 9	⬇ 1					79.2	20.8
78	Brno University of Technology	48743	⬇ 8	⬇ 3	⬇ 3			9.2	72.5	18.3
79	Team Belgium	45080	⬇ 5	⬇ 1	⬇ 1		1.2	7.4	31.6	18.5	41.3
80	Team Viet Nam	42563	⬇ 1				28.7		31.3	29.1	10.9
81	HardOCP	36715	⬆ 5						74.4	25.6
82	Turku	36285	⬆ 22	⬆ 2	⬆ 2				100.0
83	huskers-gimps	35914	⬆ 4	⬆ 2	⬆ 2	⬆ 1			74.5	25.5
84	Debian	35482	⬆ 4	⬇ 1	⬇ 1	⬇ 1			99.0	1.0
85	VIPR	34806	⬆ 25	⬆ 7	⬆ 2	⬆ 1	75.6		15.9	8.5
86	Team H	34796	⬇ 3	⬇ 4		⬇ 1	12.9		86.5	0.6
87	Hermessz	32839	⬇ 3		⬆ 1		64.2		35.8
88	LTT fans	32146	⬇ 21	⬇ 9	⬇ 6		26.1		2.4		71.5
89	ᕙ(⇀‸↼‶)ᕗ	31527	⬆ 2	⬆ 2			0.7		98.9	0.4
90	Small-Team-2000	29901	⬇ 1						10.5	89.5
91	socal_prime	27411	⬇ 6	⬇ 3					71.1	28.7	0.1
92	Channel 4	25487	⬆ 1	⬆ 1	⬆ 1				81.3	18.7
93	MES-Team	25106	⬇ 11	⬇ 4	⬇ 1		72.7	7.1		20.1
94	The Fellowship of Infinity	24984	⬆ 2	⬆ 1					99.5	0.5
95	Costa Rica	23870	⬇ 5	⬆ 1	⬆ 1				75.2	24.4
96	MurrayInfoSys	21630	⬆ 9	⬆ 1	⬆ 1				67.8	32.2
97	SpartaAlumni	20492	⬆ 3	⬆ 4	⬆ 6				60.9	39.1
98	Team Austria	19799	⬇ 18	⬇ 12	⬇ 3		90.3	1.1	8.6
99	Team Retired	19174	⬇ 7	⬇ 1	⬇ 1				28.6	11.1
100	Georgia Tech	18682	⬇ 42	⬆ 10	⬆ 2				100.0
101	A Single Engineer	17894	⬇ 4	⬇ 1	⬇ 2				73.8	26.2
102	PrimitiveRootsCircle	17680	⬇ 8	⬇ 3	⬇ 1		20.5		49.2	27.6	2.7
103	GIMPS Romania	17381	⬆ 42	⬆ 42	⬆ 1		69.6		27.4	3.0
104	LimePrime	17331	⬇ 23	⬇ 10	⬇ 4			8.2	81.3	10.6
105	Aiblspitz	15489	⬆ 28	⬆ 10	⬆ 4		0.9	75.9	10.2	11.9	1.1
106	SETI.Germany	14419	⬆ 8	⬆ 1				6.6	22.0	71.4
107	Ozzie Prime	14312	⬇ 5	⬇ 5				3.9	38.6	16.9		40.7
108	NUST	14223	⬆ 11	⬆ 1			16.4	74.6	5.9	3.0
109	Spain	14170	⬆ 2	⬇ 5	⬇ 4				66.1	33.9
110	Team Finland	13648	⬇ 44	⬆ 2	⬆ 1		0.9		97.1		2.0
111	Com Systems (RU)	13158	⬆ 24	⬆ 7	⬆ 5				65.2	34.8
112	Portland State University	12753	⬇ 9	⬇ 1				35.4	49.8	14.8
113	moeses	12583	⬆ 2						99.1	0.9
114	Nerdfighters for Mersenne Primes	12560	⬇ 6	⬇ 6	⬇ 4				87.3	12.7
115	Quantus	12173	⬇ 14	⬇ 9			10.0		13.0	25.1		51.9
116	Team Slovenia	12159	⬇ 10		⬆ 1				70.4	29.5
117	Team Norway	11713	⬇ 22	⬇ 14	⬇ 3		79.4			4.4	16.1
118	RobotechResearch	11032	⬆ 43	⬆ 9	⬆ 1				50.9	49.1
119	FREE ROBUX	10852	⬆ 3	⬆ 2	⬆ 1				100.0
120	Granada	10784	⬇ 3	⬆ 3	⬆ 3		28.0		21.9	49.4
121	Royal Military College of Canada	10691	⬆ 2	⬆ 1			89.7		7.9	2.4
122	TurkishMath	10313	⬆ 9	⬆ 4	⬆ 6				85.0	15.0
123	GIMPS.Taiwan	10069	⬇ 16	⬇ 3	⬇ 1				86.7	12.7	0.1
124	Mensa	9691	⬇ 8	⬇ 10	⬆ 2	⬆ 1			89.1	10.8
125	Syntony	9555	⬆ 3	⬆ 3		⬆ 1				100.0
126	Politeknik Banting, Selangor	9455	⬇ 14	⬇ 7	⬇ 2	⬇ 2	88.6		8.4	3.0
127	JiBoTeam	8912	⬇ 1	⬆ 2						100.0
128	Shaffer's Studio	8871	⬆ 1	⬇ 3	⬆ 1				87.6	12.3
129	Triangle	8634	⬆ 1	⬆ 6	⬆ 1				99.1	0.9
130	Die Zeitfinder	8558	⬇ 5	⬆ 1	⬆ 1				90.9	9.1
131	Abacus	7925	⬇ 10	⬆ 3	⬆ 1				98.9	1.1
132	math.auth.gr	7704	⬆ 60	⬆ 19	⬆ 1				100.0
133	Team Splunk	7605	⬆ 4	⬆ 3	⬆ 1			28.1	71.9
134	Hyperion	7553	⬇ 21	⬇ 4	⬆ 1	⬆ 1				21.8
135	University of Waterloo	7519	⬆ 7	⬆ 2	⬆ 1	⬇ 1			100.0
136	FreeBSD	7497	⬇ 9	⬇ 4	⬆ 2				73.5	26.5
137	Server66	6894	⬇ 5	⬇ 13			100.0
138	Brasil	6749		⬆ 1	⬆ 5				81.4	18.6
139	irowiki	6612	⬇ 3	⬇ 1						100.0
140	Prime Rib	6563							96.4	3.6
141	SU Prime Pirates	6437							61.5	38.5
142	MadPoo	6207	⬇ 43	⬇ 25	⬇ 24			75.7		24.3
143	Team Christensen	6059	⬆ 1	⬇ 1	⬇ 1					100.0
144	FactorMania	5973	⬆ 20	⬆ 13	⬆ 1	⬆ 1		59.6			40.4
145	Elisabeth-von-Thadden-Schule	5505	⬇ 2	⬇ 2	⬇ 1	⬇ 1			42.1	57.9
146	youngfun429	5180	⬇ 26	⬇ 2					59.6	40.4
147	MES22-Team	5150	⬇ 23	⬇ 14			100.0
148	nmbarek_team	4952							99.8	0.2
149	teamMALI	4933	⬆ 1	⬇ 2	⬆ 5				79.4	20.6
150	Crunching@EVGA	4888	⬆ 18	⬆ 5	⬇ 1				99.7	0.3
151	Danpi for GIMPS	4710	⬆ 1	⬆ 1	⬇ 1		100.0
152	Hong Kong GIMP	4697	⬇ 3	⬇ 3					66.6	33.4
153	Furry Primes	4503	⬇ 19	⬇ 7	⬇ 2		74.8			25.2
154	Korea.Prime	4439	⬆ 18	⬆ 6	⬆ 6				70.8	29.2
155	The_Dude_Abides	4317	⬇ 9	⬇ 5	⬇ 2		27.5			61.6
156	México mágico	4208	⬆ 9	⬇ 2	⬇ 1				75.3	24.7
157	Olympic College	4079		⬇ 1	⬇ 1					100.0
158	Noam Karni Team	3962	⬆ 12		⬇ 1				79.7	20.3
159	Arpan Sen Labs	3767	⬆ 72	⬆ 14	⬆ 5				56.2	43.8
160	Phi Kappa Theta	3650	⬇ 2	⬆ 5	⬇ 1				66.2	33.8
161	GIMPS.Hong Kong	3621	⬇ 2	⬇ 2			1.6		65.7	32.7
162	zeit	3596	⬇ 11	⬇ 9	⬇ 4		3.0			97.0
163	YESHUA IS THE MESSIAH	3363	⬆ 68	⬆ 34	⬆ 14				99.4	0.6
164	Kabylie	3156	⬇ 8	⬇ 3	⬇ 2		15.5	3.2	49.3	31.9
165	Team_Brazil	2999	⬇ 2	⬇ 3	⬇ 2		83.1	0.2		16.7
166	KnightLight	2786	⬆ 47	⬆ 39	⬇ 1					99.9
167	Pi Rho	2499	⬆ 15		⬇ 1				67.1	32.9
168	Morocco	2440	⬆ 28	⬆ 18	⬇ 1				34.5	65.5
169	GIMPSMalaysia	2394	⬆ 6	⬇ 1	⬇ 1				66.8	33.2
170	VRS_SE	2364	⬆ 1	⬇ 1					66.7	33.3
171	3DCenter.org	2212	⬇ 16	⬇ 7	⬇ 2						100.0
172	GIMPS_KS	2199	⬆ 2	⬇ 1	⬇ 1				36.5	62.0	1.4
173	I Love Canadian Natural Resources	2012	⬇ 4	⬇ 7	⬇ 1					100.0
174	Obsidian	1963	⬆ 4	⬇ 2	⬇ 1					100.0
175	The Prime Pioneers	1919	⬇ 9	⬆ 1	⬇ 1			100.0
176	The Pensis	1869		⬆ 1	⬇ 1					100.0
177	Subprime Searches	1614	⬇ 10	⬇ 2	⬆ 1		84.2			15.8
178	F=dp/dt	1588	⬇ 1		⬆ 1	⬆ 1			99.6	0.4
179	San Francisco	1586	⬆ 5	⬆ 1	⬆ 1	⬆ 1			100.0
180	hreid	1575	⬆ 20	⬆ 18	⬆ 1	⬆ 1			100.0
181	cr_colorado	1549	⬆ 4	⬆ 1	⬆ 1	⬆ 1				100.0
182	GIMPS_IOM	1482	⬇ 3	⬇ 3	⬇ 6	⬇ 4	100.0
183	Zorin OS Crew	1466	⬇ 21	⬆ 1					52.6	47.4
184	CZAsTc	1448	⬆ 6	⬆ 1					99.5	0.4
185	WSU Cougars	1390	⬇ 46	⬇ 22					55.3	44.6
186	TunisianTeam	1031	⬇ 26	⬇ 12					75.0	25.0
187	Therian Primes	1007	⬆ 29	⬆ 3				14.6		52.4	33.0
188	His Dark Materials	958	⬇ 7	⬆ 1						45.6	54.4
189	Czech National Team	903	⬆ 21	⬇ 2			4.1		91.8	0.8	2.0
190	TimE4This	876	⬇ 2	⬆ 1						100.0
191	AWC	801	⬆ 4	⬆ 2					100.0
192	GIMPS Asturias	794	⬆ 5	⬆ 3					99.6	0.4
193	Weatopians	793	⬆ 5	⬆ 3					99.7	0.3
194	Saudi Primes	757	⬇ 21	⬇ 24	⬆ 1	⬆ 1				100.0
195	Join Us 😈	708	⬆ 9	⬆ 4	⬆ 2	⬆ 1	100.0
196	Optimists Prime	603	⬇ 49	⬇ 4		⬆ 1		100.0
197	SGDynamo Dresden	565	⬆ 8	⬆ 3	⬆ 1	⬆ 1	100.0
198	PrimeObsession	539	⬆ 8	⬆ 3	⬆ 1	⬆ 1				100.0
199	alan145	481	⬇ 19	⬇ 5	⬆ 1	⬆ 1	100.0
200	London Computation Club	478	⬆ 8	⬆ 2	⬆ 1	⬆ 1				100.0
201	Team Dominik Radler	290	⬆ 8	⬆ 2	⬆ 1	⬆ 1	100.0
202	Yurunago	276	⬆ 29	⬆ 4	⬆ 1	⬆ 1				100.0
203	Vegan	275	⬆ 28	⬆ 19	⬆ 1	⬆ 1				100.0
204	Byberg Nordic Prime	265	⬇ 5	⬇ 16	⬆ 1	⬆ 1				100.0
205	FDY	265	⬆ 26	⬆ 17	⬆ 17	⬆ 1				100.0
206	www.Adamek.biz	265	⬆ 9	⬆ 1		⬆ 1				100.0
207	Math Teachers of the World	259	⬆ 10	⬆ 1		⬆ 1			100.0
208	GIMPS Hams	253	⬆ 10	⬆ 1		⬆ 1		100.0
209	DividerHunt	221	⬆ 11	⬆ 1		⬆ 1	100.0
210	Manri Costa Rica	213	⬆ 11	⬆ 1		⬆ 1				100.0
211	30thousandwon	193	⬆ 13	⬆ 1		⬆ 1				100.0
212	/r/counting	184		⬇ 8		⬆ 1
213	miiro	150	⬆ 18	⬆ 1		⬆ 1	100.0
214	Team Bulgaria	134	⬇ 3	⬇ 1		⬆ 1					100.0
215	GIMPS.Peace	122	⬆ 10			⬆ 1	44.7	55.3
216	TeamUbuntu	121	⬆ 10			⬆ 1				100.0
217	sannerud.com	108	⬆ 13			⬆ 1	43.1				19.4	37.5
218	PROMYS	23	⬆ 11			⬆ 1					100.0
219	PARG team	21	⬆ 12			⬆ 1					100.0
220	ANDY	9	⬇ 37	⬇ 39		⬆ 1				98.4
221	International School of Beijing (ISB)	2	⬇ 68	⬇ 38	⬇ 27	⬇ 27				94.6
222	yfinder	1		⬇ 1	⬇ 1					100.0